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Polymer Technology

Polymer Technology
Which of the following is a copolymer?

PVC
Polythene
Bakelite
Teflon

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Polymer Technology
The physical state in which polymers exist is

Amorphous glassy state
All of these
Melts & rubber like state
Partially crystalline state

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Polymer Technology
Nylon-6 as compared to nylon-66 is

Having higher melting point
None of these
More abrasion resistant
Harder

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Polymer Technology
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

50°C and 1 kgf/cm²
50°C and 3 - 4 kg/cm²
250°C and 1 kgf/cm²
250°C and 10 kgf/cm²

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Polymer Technology
Flexible plastic pipes are made of

Low density polyethylene (LDPE)
Unsaturated polyester
Polypropylene
High density polyethylene (HDPE)

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Polymer Technology
Polymerisation process in which two or more monomers of chemically different nature take part is called

None of these
Chain polymerisation
Addition polymerisation
Copolymerisation

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